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The world has abundant freshwater but it is unevenly distributed and under increasing pressure, U.N. agencies say, as highlighted by the severe shortages in Cape Town.More than 97 percent of the planet's water is salty, most of it in the oceans and seas, but there is also a good supply of freshwater.Every year around 42.8 trillion cubic meters of renewable freshwater circulates as rain, surface water or groundwater, according to the U.N.'s Food and Agriculture Organization.In its most recent data (2014), the FAO said 45 countries were experiencing water shortages, defined as less than a thousand cubic meters (1 million liters) per person a year.The demand for water in cities is expected to grow by 50 percent by 2030 .In the European Union and North America, however, industry consumes more than half of freshwater supply, ahead of agriculture (under 34 percent) and domestic use (under 18 percent).
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